P0178..Flex fuel sensor??
March 17th, 2015, 9:03 PM
#11
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help
Im having the same problem with my truck and it started a while back i thought it was the fuel pump ,should i try running it with flex fuel??? How can i find out if it runs with it or if it a non flex fuel I have a 2004 5.3 2wd vortec tahoe when i got it with 180,xxx miles i bought it from a dealership and it work fine gas saver too then out of nowhere i had fuel problems and started wasting gas i barely found out that 04 tahoe use flex fuel too...should i try it wirh flex fuel???? Were is the sensor located so i can clean it...i appreciate everybodys info God bless everybody
March 20th, 2015, 12:08 PM
#12
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Welcome to the forum...
I would NOT recommend running e-85 if you do not know if the engine is flex capable or not. You may need to have the alcohol reading reset if it is reading incorrectly...
I would NOT recommend running e-85 if you do not know if the engine is flex capable or not. You may need to have the alcohol reading reset if it is reading incorrectly...
October 31st, 2017, 10:19 AM
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ever fix this
My 04' burb has the same issue! I keep clearing out the code and tapping on the sensor with a mallet and it goes off for a hundred miles or so. Then the light comes back on and also reads the knock sensors are bad. I had not thought of really running flex fuel. Gas around here just contains 10% ethonal is that the same thing?
Last edited by Mr_MarkG; October 31st, 2017 at 10:22 AM.
July 7th, 2020, 9:50 PM
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Flex fuel sensor
[QUOTE=schlepprock379;246399]Hey guys,we have an '04 Tahoe with a flex fuel 5.3. While driving today the engine light came on but was running fine,got home and run the scanner on it and it had the P0178 code showing for the flex fuel sensor. My question is,has anyone had experience with this situation,has anything else caused this very code to come up or is it an indication of the actual flex fuel sensor needing to be replaced? Oreillys has one for $448.00,I dont mind paying for the part as long as that is the cure and not a code from a symptom of something else.Again its been running fine..it has 161.xxx miles on it..Thanks..Phil[
July 8th, 2020, 12:12 PM
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Flex Fuel sensor
[QUOTE=Michael Pack;450402]
Phil, my 05 Suburban pulling a P0179, it was the Flex Fuel sensor. I replaced it after some troubleshooting help from the below link with ACDelco PN 12570260, $350 from Amazon and been code free for 15 months now.https://sparkys-answers.com/2010/03/...ode-p0178.html
Good luck with yours, Mark
Hey guys,we have an '04 Tahoe with a flex fuel 5.3. While driving today the engine light came on but was running fine,got home and run the scanner on it and it had the P0178 code showing for the flex fuel sensor. My question is,has anyone had experience with this situation,has anything else caused this very code to come up or is it an indication of the actual flex fuel sensor needing to be replaced? Oreillys has one for $448.00,I dont mind paying for the part as long as that is the cure and not a code from a symptom of something else.Again its been running fine..it has 161.xxx miles on it..Thanks..Phil[
Good luck with yours, Mark
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